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25 March, 17:28

What are the factors of the polynomial below?

x2 + 7x - 18

A. (7x + 11) (x - 1)

B. (x + 2) (9x - 2)

C. (x + 9) (x - 2)

D. (7x + 9) (x - 2)

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Answers (1)
  1. 25 March, 19:25
    0
    It is c because you can do a cross then put the 7 as the sum and - 18 as the product and then you see what can be multiplied to get you - 18 and at the same time get you 7 when you add both of them together. Which is - 2 and 9.
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